Dr Stefan Immler NASA Goddard Space Flight Center Astrophysics Science Division X-Ray Astrophysics Laboratory Greenbelt, MD 20771, USA Phone: 301-286-0072 [email protected]

March 20, 2007 To Whom It May Concern

We hereby confirm that Nesever Baltaci, physics teacher, Umraniye Anatolia Imam Hatip and Imam Hatip High School, Istanbul, Turkey, presented a poster in absence, entitled “Calculating the Distance of Supernova 1987A” during the international conference: SUPERNOVA 1987A: 20 YEARS AFTER Supernovae and Gamma-Ray Bursters held in: Aspen, Colorado, USA, from February 19-23, 2007.

Sincerely, Dr. Stefan Immler (NASA/GSFC), Prof. Richard McCray (U of Colorado) and Dr. Kurt Weiler (NRL) on behalf of the Scientific Organizing Committee Email: [email protected] Web: http://astrophysics.gsfc.nasa.gov/conferences/supernova1987a/